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https://issues.apache.org/jira/browse/LUCENE-4656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542908#comment-13542908
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Uwe Schindler commented on LUCENE-4656:
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I am happy with both solutions. I agree, that only the really used attributes
should be added. There are other tokenstream that dont have a CTA, e.g.
NumericTokenStream. For the indexer, only BytesRefAttribute is mandatory (I am
not sure it is really *mandatory*, but it is the only one that it is consumed
to get the term text).
> Fix EmptyTokenizer
> ------------------
>
> Key: LUCENE-4656
> URL: https://issues.apache.org/jira/browse/LUCENE-4656
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/analysis
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Trivial
> Attachments: LUCENE-4656.patch
>
>
> TestRandomChains can fail because EmptyTokenizer doesn't have a
> CharTermAttribute and doesn't compute the end offset (if the offset attribute
> was added by a filter).
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